Foreplay in may areas: "You awake?"
Way down South: "You awake, mom?"
Southern Foreplay
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is saying that in some parts of the South, foreplay involves asking your mom if she's awake. Get it? Because it's implying they're gonna have sexy time with their momma. You probably think that's fine. You're probably from the South.